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GALEB ISBISTER, OF ALLEGHENY, PENNSYLVANIA.

FEEDER FOR NAIL-CUTTING MACHINES.

Specicaton of Letters Patent No. 3,868, dated December 31, 1844.

To all whom it may concern Be it known that I, CALEB ISBISTER, of thecity of Allegheny, county of Allegheny, State of Pennsylvania, haveinvented a new and useful Machine for the Purpose of Turning and FeedingRods or Plates to the Cutters of Nail-Machines; and I do hereby declarethat the following is a full, clear, and exact description ofthet'construction and operation of the same, reference being had to theannexed drawings, making part of this specification, in which-- Figure1, is a perspective view. Fig. 2, a longitudinal elevation of thereverse side. Fig. 3, underside of top of table. Fig. A sliding head,and collar. Fig. 5 lever, Fig. 6 cam with the method how to construct,Fig. 7, cog wheel between cams, and finger cog, Fig. 8 end view of tubeas at D, Fig. 9

feeding rod. Fig. 10 slide showing the rack, Fig. 11 side view ofnippers. Fig. 12 end View of nippers. Fig. 13 spring catch on inside oftable leg, showing the end of the trough supported by it.

Description-My machine consists of a hollow shaft or tube A with a fiatmouthpiece a, Fig. 1, having within it two grooves, Z9, b, Fig. S, thistube is fixed upon a table or platform B, bymeans of two pillarblocks cc, which receive the journals of a collar C e, which is on one end ofthe tube, as at D, the other end of the tube is passed through anothercollar E, Fig. 4L, which is made fast by its journals to a square frameor sliding head, F, which sliding head, works vertically between the twouprights d cl, made fast upon one end of the platform B, attached to thesliding head is a springl catch e, which works the rack wheel G, workingthe small pully H, Fig. 2, which by means of a band I, works the largepulley K, this pulley works the cog wheel L,

Fig. 3, which works into the rack M, Fig.`

10, on the under side of the slide f, fixed on the slide is an uprightN, which receives the joint end of the rod O, the other end of the rodhaving a spring catch g, to receive the nippers, Fig. 11, which are madewith a circular recess 7L, to receive the spring catch of the rod, andalso have projections o-n each side a, a, Fig. l2 to enter the groovesof the tube, the slide f works under, and also between, the two springguides 79 p, made fastto the forward end of the slide, is a cord, orchain, which passes through to the underside of the table, and over somepulleys Fig.

3, and is made fast to the weight (j, which moves on rollers in thetrough It, one end of which is fastened by journals to the up right S,the other is supported by the spring` catch J, Fig. 13. The lever T,which is made fast upon the side of the table, passes under the slidinghead F, the other end is connected by the chain c', to the trough R,made fast tothe inside of one of the legs of the table is a springcatch, which passes through the top, as at j, 3, Fig. 13, below the topand in front of the cog wheel is a friction roller c, Fig. 3, made fastupon a jointed lever V, passed over a pulley U on one of the uprights dis a cord or chain mi, one end of which is made fast to the trough R,andthe other end to a` stirrup n, the fall catch E, Fig. 3, is toprevent the rack wheel G slipping back, the nail machine requires thefollowing additions, viz., on the working shaft of the machine, `I placea finger cog r, Fig.

"Z, whichworks into the cog wheel t, between the two cams vVV, W, on theshaft 3, Fig. 1. These cams are made fast to the cog wheel. They workthe two levers w, These levers are made fast by a cord or chain to thetube A as at Y.

The manner in which the machine operates is as follows: the workingshaft of the nail machine brings around the finger cog 7", which strikesone o-f the cogs of the wheels zi between the cams w, fw, turns them oneeighth around which causes one of the len `vers as to raise on thecircumference of one of the cams, and the other lever to drop into thenotch of the other cam this causes the tube A to turn over and also torise and fall. In the fall it takes with it, by means of the springcatch e, one tooth of the rack wheel G, which by means of 'the pulleysI-I and K,`and the small cog wheel L, brings forward the slide f, whichworks the feeding rod O,.when the slide comes quite forward it pushesback the. spring catch .7', which supports the trough R, when itfallsletting the weight c] run down, (and at the same time raising thefriction roller 7s, whichL lifts the slide f, out of gear of the smallcog wheel L, which brings back the feeding rod O, with the emptynippers. The fall of the trough causes the lever T to raise the slidinghead F, which stops the motion of the tube, so that it can be againsupplied. When supplied and the rod attached to the nippers, and thenippers put inside the tube with the projecting side pieces in thegrooves. The trough must then be raised to its place by the cord m,

over the pulley U, where it is held by the spring' catch y', Fig. 3. Therising of the trough R, raises the lever T, which allows the sliding`head to fall again to its place, when the machine is in full operationthe tube being' turned by the motion of the levers and the motion of thesliding head F, working' the feeding rod 0, one end of the platform ismade fast by a center pin Q, Fig. 2, directly under the cutter of thenail machine, and the other end is made fast by a screw in an oblonggroove w, so as to allow of a side motion.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. The mode of feeding the nail rod or plate to the cutters, by means ofa rotating hollow shaft, or tube, operating substanlow shaft, or tube.

CALEB ISBISTER. IVitnesses:

'FLEMING Monnow,

ILLIAM VESTERMAN.

